Hair dryer



FIG. 1 is a perspective view of my new design, from the front and from the right;

FIG. 2 is front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken lines showing the cord and unshaded regions inside the front opening and rear switch form no part of the claimed design. 

The ornamental design for a hair dryer, as shown and described. 